Buffer Overflow vulnerability in FFMpeg 4.2.3 in dnn_execute_layer_pad in libavfilter/dnn/dnn_backend_native_layer_pad.c due to a call to memcpy without length checks, which could let a remote malicious user execute arbitrary code.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-936083 advisory.

    Buffer Overflow vulnerability in FFMpeg 4.2.3 in dnn_execute_layer_pad in     libavfilter/dnn/dnn_backend_native_layer_pad.c due to a call to memcpy without length checks, which could     let a remote malicious user execute arbitrary code.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - FFmpeg <=4.3 contains a buffer overflow vulnerability in libavcodec through a crafted file that may lead
    to remote code execution. (CVE-2021-30123)

  - FFmpeg 4.2 is affected by null pointer dereference passed as argument to libavformat/aviobuf.c, which
    could cause a Denial of Service. (CVE-2020-20450)

  - Buffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend in libavcodec/pngenc.c, which
    could let a remote malicious user cause a Denial of Service (CVE-2020-21041)

  - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak in the
    ff_v4l2_m2m_create_context function in v4l2_m2m.c. (CVE-2020-22038)

  - A Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak is affected by: memory leak in
    the link_filter_inouts function in libavfilter/graphparser.c. (CVE-2020-22042)

ID	Name	Product	Family	Type	Severity
267782	Unity Linux 20.1070e Security Update: ffmpeg (UTSA-2025-936083)	Nessus	Unity Linux Local Security Checks	Local	high
427162	Alpine: ffmpeg4: security update to 4.4-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
427162	Alpine: ffmpeg4: security update to 4.4-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
404326	Alpine: multiple ffmpeg packages: security update to 4.4-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
404326	Alpine: multiple ffmpeg packages: security update to 4.4-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high

Detections

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CVE-2020-24020

high

Tenable Plugins

high

high

high

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high